Joghee Kullan Radhakrishnan

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A pyrolysis assisted method was applied for the synthesis of defect controlled carbon nanotubes (CNTs) by varying different growth temperatures. The fabricated resistive devices containing a random network of CNTs were tested for oxygen sensing under standard room-temperature and pressure conditions. Nanotubes grown at moderate growth temperatures (870 °C),(More)
Wavelength Modulation Spectroscopy (WMS) using tunable diode laser is a versatile method for determination of concentration, temperature and velocity of absorbing gaseous molecules. This technique finds major application in industrial and scientific areas. An important component of sensors/systems based on these techniques is the phase sensitive detection(More)
Oxygen Concentration Monitoring is an important requirement in fighter aircrafts. This paper reports the results of performance evaluation of an indigenous Zirconia Oxygen Sensor, which meets the requirements of a fighter aircraft environment. The Oxygen Sensor uses a solid state electrolyte, Zirconia stabilized with 8mol% Yttria, in the form of a Nernst(More)
Tunable Diode Laser Absorption Spectroscopy (TDLAS) based gas sensing technology is a futuristic technology that has wide application in aerospace industry. In this paper we present the preliminary measurements on a TDLAS based Oxygen Sensor. TDLAS bench model setup has been established to measure the 1<sup>st</sup> and 2<sup>nd</sup> harmonics of the(More)
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